Disk-sharpening device



H. C. SIMONS.

DISK SHARPENING DEVICE.

APPLICATION FILED MAY 10. 1919.

Patented Aug. 24, 1920.

31 wueul oz 8 m/ I m 8. M H

PATENT QFFIQE.

HENRY C. SIMONS, OF ODEBOLT, IOWA.

DISILSHABPENING DEVICE.

Application filed May 10, 1919.

To all tU/LOHL it may 0011mm Be it known that 1', HENRY C. Strons, acitizen of the United States, residing at Gdebclt, in the county of Saoand State of Iowa, have invented certain new and useful improvements inDisis harpening Devices, of whirh the following is a specification.

This invention relates to a disk-sharpening device, and has for itsobject to provide an apparatus by means of which metallic disk orcircular metallic plates, when axially mounted and rotated, may bereadily provided with a cutting edge, the parts to be few and simple sothat manufacture will be economical and practical, will be edectual inoperation, and that durability may be attained.

In the accompanying drawing Figure 1. is a front view of disk sharpeningdevice embodying my invention. 2 is a broken away detail view showing apart of a bladeholder. Fig. 3 is an end view of the device. Fig. 4 is aransverse section'on line 44.- of Fig. 1. Fig. 5 is a perspective viewof the cutting-blade.

Referring now to the drawing for a more particular description, numerals6 indicate a pair of strips or elongated supports, these being disposedparall l and adjacent to each other, straps 7 or other equivalentmembers being secured to the lower sides of the supports for securingthem in spaced relation.

Numerals 8 indicate pair of angle irons, each having its vertical flangesecured to the inner edge of a support 6, the horizontal flanges a ofthe angle irons projecting toward each other, whereby a rectilinearspace or channel Z) will be formed between the supports.

Mounted upon the flanges a of the angle irons is a standard 9, thispreferably being of inverted U-shape, each of its arms being providedwith a foot-member c for engaging said horizontal flanges, and by use ofsuitable keepers or bolts 10, it will be under stood that the standardmay be secured to the last named flanges, these being engaged at theirlower sides by the heads d of the bolts. Also it will be understood thatby use of the bolts, in a well known manner, the standard may beadjusted longitudinally of the supports. the foot-members 0 havingbearings on the flanges a.

Numeral 11 indicates a second standard, substantially of invertedU-shape, disposer transversely to span the space 72 adjacent toSpecification of Letters Patent.

Patented Aug. 24;, 320.

Serial No. 296,271.

one end of the supports opposite to the standard 9, said standard 11having footmembers a secured to the supports 6, its upper end beingprovided with a box 12 for bearings of a stub shaft 13 upon which ismounted a wheel adapted to be actuated. by any suitable means forrotating saidshaft, the inner end of the latter being provided with aclamping block 15.

Threaded in the arms of the standard 9 is a centering-screw 16, adaptedto be retated by its crank 7, and as thus described, a revolublemovement is provided for any object or article interposed between andcarried by the block 15 and centering-screw, as for instance, thedisk-holding shaft 17 of an agricultural impl ment, the disks 18 beingsecured to and rotating with the shaft.

In order that the disks may be sharpened, I provide a cutting-blade 19which is substantially triangular in cross-section to cnand sharpen theperipheral edges of the disks while the latter are rotating.

Since the disks are not always accurately centered on the shaft and arenot, in all instances, disposed at exactly right-angles to said shaft, 1provide a staff 20 which may be manually controlled, its lower end beingprovided with spike g and its upper end being provided with an arm-holdit, said staff, between its ends, being provided with bracket 21 havinga projection Z: for supporting the blade 19, a bolt 22 being employedand having a threaded connection with a projection m of the brarket forsecurin the blade 19 in rigid relation with the bracket; and it will beappreciated that an operator, using said member 20 as a crutch, with itsspike g suitably engaging one of the supports 6, may cause the disks tobecome sharpened, the staff being disposed at such inclination that oneof the longitudinal edges of theblade 19 will engage the periphery ofthe disk at a suitable inclination to form a shapened edge, a transversehandheld member a being also provided for the staff, as an aid in itsmanual control.

It will be appreciated that the device would be practically inoperativeunless the cutting-blade 19 or a blade substantially similar thereto wasemployed, the fact that this blade is of triangular form in crosssectionbeing of advantage for securing it to the bracket and presenting one ofits edges for engaging the circular edge of a disk. Also unless thestandard 9 is arranged set-screw s has been adjusted in the block 15,and the screw 16 made non-revoluble by -use of the lock-nut w, the shaft13 may be actuated for rotating the shaft lTand its disks, the speed ordegree of rotation preferably being moderate or quite limited, so thatan operator may effect a suitable engagement of the blade 19 with thedisk, as and for the purpose described.

"While I have explained construction in detail, I do not wish to beunderstood as limiting myself in this respect, and changes may be madein form, size, proportion of parts, material to be used and minordetails, since the extent or degree of such changes are determined bythe scope of the invention 'as claimed.

1. In an apparatus for sharpening the disks of a disk-holding shaft, apair of elongated supports connected side by side to form a channeltherebetween, each support being provided with a flange disposedtooverlie a part of said channel, a standard stationary with the sup mrts,a revoluble stub-shaft having bearings on the stationary standard andprovided with a clampingmember for supporting one end of the diskholdingshaft, a second standard substantially of inverted U-shape havingfootmembers engaging said flanges and provided with a centering-element,means on .the foot-members of the second standard adapted to engage saidflanges for adjusting Said second standard longitudinally of thesupports for engagement of said centering element with the opposite endof the disk-holding shaft, a staff, and a cuttingblade triangular incross-section mounted on the staff, said staff being adapted to bedisposed in engagement with one of the supports with its cutting-bladeengaging a disk of said disk-holding shaft.

2. In an apparatus for sharpening the disks of a disk-holding shaft, apair of elongated supports connected side by side to form a channeltherebetween, each support being provided with a flange overhanging apart of said channel, a standard on the supports, a revoluble stub-shaftwith bear ings on the standard and having a clamp ing-member forengaging one end of the disk-holding shaft, a second standardsubstantially of inverted U-shape' provided with a centering-screw andhaving foot-members engaging said flanges, a pair of bolts eachtraversing a foot-member of the second standard and having a head inengagement with said flanges, said second standard and said centeringscrew being movable for engagement of said screw with the opposite endof the disk-holding shaft, a staff, and a cutting-blade angular incross-section mounted on the staff, said staff being adapt-- ed to bedisposed in engagement with one of the supports with its cutting-bladeengaging a disk of said disk-holding shaft.

In testimony whereof, I have affixed my signature in presence of twowitnesses.

HENRY C. SIMONS.

Witnesses i WILLIAM H. HANSEN,

JO N A. KOVAR.

